It is hard to eat a healthy diet when you eat at fast-food restaurants often, the site goes on to say. Many foods are cooked with a lot of fat, even if they are not trans fats. Many fast-food restaurants do not offer any lower-fat foods.
Lithuanians will speak Russian automatically, Polish is a different language but they will have learnt Russian in school in the same way that English children learn French, that is - because they're the immediate neighbours. In the Old DDR, they taught Russian as the second language automatically. Some schools there still do.
Justina's right about the younger people being better speakers of English in Lithuania. At least bring a dictionary. It's a great country and the people are generally fantastic. I teach English in a provincial Lithuanian Secondary School. You will have no problem in the big cities. Elsewhere try the under thirties. The older ones will be more proficient in Russian though, with the amount of Lithuanians working abroad, you'll find someone who can get by, even in a village.